do poos do poos do poos
can see in dark
who was the first person to come up with the phrase "for the people,for th people,by the people"?
A government by the people, of the people, for the people is a democracy
the people were celts
See in the dark
Scotopic lumens can be defined as a type of light that is not generally detected by common light meters. It accounts for part of the human eyeÕs perception of brightness.
With a profesional scotopic/photopic light meter. These cost $ 2,200.
Photopic vision: Vision under well-lit conditions which provides for color perception,and which functions primarily due to cone cells in the eye. Scotopic vision: Monochromatic vision in very low light which functions primarily due to rod cells in the eye.
This website should clear up any questions you have about the disorder: http://www.readingandwriting.ab.ca/judypool/irlen.htm If not, you can just google scotopic sensitivity disorder, and you should find thousands of sites describing it. Hopefully this helps, if it doesn't, then I'll be happy to answer any other questions you may have.
Rods are the photoreceptors that are not used in color vision. Rods are much more plentiful than the cones, and much more sensitive, they are responsible for scotopic vision.
The photoreceptors commonly referred to as "Rods", which are found in the retina, are responsible for night vision. (scotopic vision) "Cones" are responsible for colored vision with brighter light conditions. (photopic vision)
For maximum utilization of scotopic vision( a vision of eye in low light), 20 to 30 minutes in total darkness are required to attain satisfactory retinal dark adaptation. An alternative is to have the aircrew member wear red goggles for 20 to 30 minutes before flying. When worn in normal illumination, red goggles will not interfere significantly with the ability to read most maps, charts, manuals, etc., as long as the printing is not in red ink. Red goggles block all light except red, which enhances rod dark adaptation because red light does not stimulate the scotopic system.
night blindness is particularly caused by deficiency of vitamin A (retinol)Our eyes contain 2 photosensitive cellsrods-for scotopic vision i.e., for night vision contain pigment rodopsincones-for photopic vision i.e, to see colours in presence of light contain pigment ionopsinrodopsin pigment contain retinal, an aldehyde of retinol(vitamin A)Therefore deficiency of vitamin A effects scotopic vision and is known as night blindness
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern S-O--PI-. That is, eight letter words with 1st letter S and 3rd letter O and 6th letter P and 7th letter I. In alphabetical order, they are: scotopia scotopic
Lumen and brightness are unconnected.Lumens are an imaginary measure of the amount of light (equivalent to a weight of apples for instance). A lamp will be said to emit X lumens.Lumen figures are calculated from the amount of energy at any particular wavelength and then applying a correction to allow for the sensitivity of the human eye (which is greatest in the red-orange). Different correction figures are applicable for the two different types of human sight - that in high and low level illumination - photopic and scotopic respectively. Hence any light source will have both photopic and scotopic lumen figures. Photopic would be applicable to household or office lighting, scotopic to street lighting, for instance.Different corrections are also known for other organisms, other than man, most importantly for plants, where plant lumens are a measure of the effect of any light-source on photosynthesis.AnswerIn simple terms, the lumen is the photometry-equivalent of the watt. In other words, it defines the rate at which a source emits 'visible light' energy (as opposed to the watt, a radiometry unit, which defines the rate at which the same source emits allradiant energy (including visible light). Lumens are NOT used to measure 'brightness', or more accurately, luminous intensity (candelas) or luminance (candelas per square metre). Note that the 'watt', described above, is used to measure the output from a light source, not its input.Radiometry describes the measurement of electromagnetic energy across a very broad spectrum. Photometry describes the measurement of just the 'visible light' part of the electromagnetic energy spectrum, as perceived by the human eye.